Did you try to use the DHIS 2 browser cache cleaner app? If it doesn’t work, maybe try to use the Data Administration app too:
In addition, please make sure the user has the proper authorities in the role settings and the user settings.
Finally, if all the above doesn’t work may you share the Network logs to see if we can find an error - please see screenshot below for the instructions. Also, if it’s possible share the tomcat log (without including sensitive info).
Hope this helps! (: Thanks!